/* ASSASSAT KHALI — CLASSIC CALCULATOR VISUAL SYSTEM
 * Matched to the original Armstrong + BA13 calculator's approved design.
 * Design-only: no geometry, materials, SVG drawing, or PDF generation.
 */
:root{
 --bg:#f3f6f7;--ink:#142c35;--muted:#63757b;--border:#e0e7e7;
 --green:#166e65;--dark:#112c36;--amber:#e9ae6c;--white:#fff;--radius:18px;
}
html{scroll-padding-top:20px}
body{background:#f3f6f7;color:#142c35;font-family:system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;line-height:1.6}
button,input,select{font-family:inherit}
button:focus-visible,input:focus-visible,select:focus-visible,a:focus-visible{outline:3px solid #62cbbb;outline-offset:3px}
.top{background:transparent;border:0}
.topin{max-width:1250px;min-height:61px;padding:0 18px}
.identity{font-family:system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;color:#243f48;font-size:12px;gap:9px}
.identity .mark{width:34px;height:34px;border-radius:10px;background:#174a51;color:#c9e8e2;box-shadow:none;font-size:13px}
.back{color:#167767;background:#e6f4ef;min-height:41px;padding:9px 14px;border:1px solid #d5e9e3;font-size:12px}
.back:hover{background:#d5eee5}
.wrap{max-width:1250px;padding:0 18px 42px}
.hero{background:linear-gradient(120deg,#112c36,#174a51);color:#fff;border-radius:20px;padding:25px 30px;min-height:117px;margin:0 0 20px;gap:20px;box-shadow:none}
.hero:before{width:220px;height:220px;border:1px solid #ffffff24;left:8%;bottom:-170px;top:auto}
.eyebrow{font:800 12px system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;letter-spacing:2px;color:#abdfd7}
h1{font-size:clamp(24px,3vw,34px);font-weight:900;line-height:1.25;margin:7px 0}
.hero p{font-size:13px;color:#c3dcd9;line-height:1.7}
.hero-mark{display:grid;place-items:center;width:65px;height:65px;min-width:65px;flex:none;border:1px solid #ffffff29;border-radius:18px;background:#ffffff12;font-family:system-ui,sans-serif;color:#a7e5da;font-size:41px;font-weight:500;opacity:1;line-height:1}
.hero-mark svg{width:45px;height:45px;stroke:#a7e5da}
.stepguide{display:none}
.panel{background:#fff;border:1px solid #e0e7e7;border-radius:18px;padding:20px;margin:0 0 18px;box-shadow:0 9px 28px #112c3610}
.panelheader{margin:0 0 15px;gap:10px;align-items:center}
.step{width:30px;min-width:30px;height:30px;background:#e1f4ef;color:#167767;border-radius:10px;font:900 12px system-ui,sans-serif}
.panelheader h2{font-size:18px;font-weight:850;line-height:1.4;margin:0 0 4px}
.panelheader p{font-size:12.5px;color:#63757b;margin:0}
.inputs{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.formfield{gap:4px}
.formfield label{font-size:12px;color:#40555e;font-weight:800}
.formfield input,.formfield select{border:1px solid #d8e2e3;background:#fcfefe;border-radius:10px;min-height:46px;padding:10px 12px;font-size:16px;color:#14313c;text-align:center;font-weight:800}
.formfield input:hover,.formfield select:hover{border-color:#81b7b3}
.formfield select{text-align:right;font-size:13px}
.hint{font-size:12px;color:#875515;background:#fff4dd;border:0;border-radius:10px;padding:10px 12px;margin-top:14px;line-height:1.85}
.hint b{color:#875515}
.options{gap:10px}
.choice{min-height:112px;background:#f9fbfb;border:2px solid #e0e8e7;border-radius:13px;padding:13px 11px;color:#254650;transition:background .15s,border-color .15s}
.choice b{font-size:13px;font-weight:850}
.choice small{font-size:11px;line-height:1.7;color:#587078}
.choice strong{font:850 18px system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;color:#123843}
.choice.selected{background:#eaf8f3;border-color:#178c79;box-shadow:none}
.choice:hover{border-color:#71afa5;background:#f1faf7}
.choice.selected:hover{background:#eaf8f3}
.choice[data-choice="2"]{border-style:dashed}
.choice[data-choice="2"].selected{border-style:solid}
.custom{background:#f8fcfa;border:1px solid #cde3dc;border-radius:13px}
.cardtoggle{gap:10px}
.chip{border-color:#d8e5e1;color:#426067;border-radius:11px;font-weight:750}
.chip[aria-pressed=true]{border-color:#178c79;background:#eaf8f3;color:#176e65}
.metric{flex:1;min-width:135px;max-width:none;background:#f5f8f8;border:0;border-radius:12px;text-align:center;padding:12px 8px}
.metric small{font-size:11px;color:#71858b}
.metric strong{font:850 19px system-ui,-apple-system,"Segoe UI",Tahoma,Arial,sans-serif;color:#174951}
.summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:15px 0}
.plan{background:#f5f9f8;border:1px solid #e7eded;border-radius:14px;padding:10px;overflow:hidden;line-height:0}
.plan svg:not([data-diagram="armstrong-full"]){max-height:none}
.plan svg[data-diagram="armstrong-full"]{max-height:none}
.actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}
.actions .primary{width:100%;flex-basis:100%;min-height:47px;border:0;border-radius:12px;padding:13px 18px;background:#166e65;color:#fff;font-weight:850;font-size:13px}
.actions .primary:hover{background:#09574f}
.actions .secondary{flex:1;min-height:41px;border:1px solid #cadae0;border-radius:12px;background:#fff;color:#1e4854;font-weight:750;font-size:12px}
.actions .secondary:hover{background:#f0f6f4}
.locked{background:#fafbfb;border:1px dashed #aebfc1;border-radius:15px;text-align:center;color:#5c737a;padding:29px 17px}
.bom table{font-size:12px;min-width:490px}
.bom th{font-weight:800;background:#f2f7f5;color:#34535d;padding:11px 12px}
.bom td{background:#fff;padding:10px 12px;border-bottom:1px solid #eaf0ef}
.bom tr:nth-child(even){background:#fff}
.bom .qty{font:850 14px system-ui,sans-serif;color:#234b55}
.bom .buy{color:#147b69;font-size:14px;font-weight:900}
.bom .note{font-size:11px;color:#71858b}
.smallprint{font-size:12px;background:#f6f9f8;color:#52696f;border:1px solid #dbe8e4;border-radius:12px;padding:13px}
.ak-hanger-toggle{background:#f6f9f8;border:0;color:#546e73;border-radius:9px;font-size:12px;min-height:43px;margin-top:10px;margin-bottom:10px}
.ak-hanger-toggle:hover{background:#edf7f2}
.footer{text-align:center;color:#7e8f94;font-size:11px}
@media(max-width:800px){
 .topin{padding-inline:10px}
 .wrap{padding:0 10px 30px}
 .hero{padding:21px;border-radius:18px}
 .hero-mark{width:52px;height:52px;min-width:52px;border-radius:14px}
 .hero-mark svg{width:35px;height:35px}
 .panel{padding:16px;margin-bottom:12px}
 .inputs{grid-template-columns:repeat(2,minmax(0,1fr))}
 .options{gap:7px}
 .plan:has(svg[data-diagram="armstrong-full"]){overflow-x:auto}
 .plan svg[data-diagram="armstrong-full"]{min-width:760px;max-width:none}
}
@media(max-width:600px){
 .eyebrow{font-size:10px;letter-spacing:1px}
 .hero p{font-size:12px}
 .hero-mark{display:grid}
 .options{grid-template-columns:repeat(2,minmax(0,1fr))}
 .choice{min-height:108px;padding:12px 9px}
 .choice:last-child:nth-child(odd){grid-column:1/-1;min-height:98px}
 .summary{grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}
 .metric{min-width:0;padding:11px 5px}
 .metric strong{font-size:16px}
 .metric small{font-size:10px}
 .actions .secondary{min-width:140px}
}
@media(max-width:380px){.options{grid-template-columns:1fr}.choice:last-child:nth-child(odd){grid-column:auto}}
@media print{
 body,.panel{background:#fff!important}
 .top,.hero,.stepguide,.actions,.hint,.footer,.ak-hanger-toggle{display:none!important}
 .panel{box-shadow:none;break-inside:avoid}
}

/* BA13 schematic: keep line spacing and annotations readable on mobile. */
.plan svg[data-diagram="ba13-ceiling"]{display:block;width:100%;max-height:none;height:auto;border-radius:10px}
@media(max-width:800px){
 .plan:has(svg[data-diagram="ba13-ceiling"]){overflow-x:auto;scrollbar-width:thin;overscroll-behavior-x:contain}
 .plan svg[data-diagram="ba13-ceiling"]{min-width:760px;max-width:none}
}

/* Wall elevation needs readable opening dimensions at mobile widths. */
.plan svg[data-diagram="wall"]{width:100%;max-height:none;height:auto;display:block;border-radius:10px}
@media(max-width:800px){
 .plan:has(svg[data-diagram="wall"]){overflow-x:auto;overscroll-behavior-x:contain;scrollbar-width:thin}
 .plan svg[data-diagram="wall"]{min-width:760px;max-width:none}
}

/* Official company symbol, cropped from the provided logo. */
.identity .mark{background:#fff;border:1px solid #dce8e5;color:#173b4e;box-shadow:0 2px 8px #112c3612}
.identity .mark img{display:block;width:30px;height:33px;object-fit:contain}